Yesterday Nick released the details of the upcoming event slated to air in 2011! They also released concept art of the main character. Hopefully more will be forthcoming as we hear from the gang at SDCC!

Update: The Legend of Korra is a 12-episode miniseries set 70 years after ATLA about Korra, the next female Avatar after Aang. She will be taught airbending by Aang and Katara's son, Tenzin. For more short details check the Korra News/Image Repository topic or check our dedicated Legend of Korra board.